Referer check for Calc background image
Referer check for Calc background image

Change-Id: I69f69e4fa790969ac4e338dd6294ff9ef951d5b6

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core